Accident Moderate Severity Resolved

CHP : Residual delays on CA-4 Westbound at Sycamore Ave (Hercules). Right shoulder affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on June 9, 2026 at 1:56 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 8, 6:56 PM

Last Updated

1 day, 6 hours ago

Jun 8, 7:00 PM

Resolved

Jun 9, 1:00 AM

Coordinates

38.0144, -122.2523

Update History

1 observations

CHP : Residual delays on CA-4 Westbound at Sycamore Ave (Hercules). Right shoulder affected. Expect delays. Jun 8, 7:00 PM

Source: 511_sfbay · ID 511.org/1505525 First seen Jun 8, 2026 7:00 PM